Lined carton or container



Jan. 3, 1950 K. T. BUTTERY 2,493,337

LINED CARTON on coxmmsa Filed on. 25, 1945 2 Sheets-Sheet 1 INVENTOR. //f/r7Z ff/2 [Eur/m) Jan. 3, 1950 K. T. BUTTERY LINED CARTON OR CONTAINER 2 Sheets-Sheet 2 Filed Oct. 25, 1945 a I n I l I m I n m n, y I 1 n INVENTOR. flfim rr/r Z 5072797) Patented Jan. 3, 1950 LINED CARTON OR CONTAINER Kenneth T. Buttery, Kalamazoo, Mlch., alsignor to Sutherland Paper Company,

Mich., a corporation of Michigan Application October 25, 1945, Serial No. 624,370 Claims. (Cl. 229-14) This invention relates to improvements in lined cartons or containers.

The main objects of this invention are:

First, to provide a lined carton or container in which the liner is so associated with the outer walls of the container that the liner is erected or opened when the walls of the carton are erected.

Second, to provide a carton of this character in which the bottom of the liner is moved to full erected position upon the erecting of the carton so that the carton may be filled to its intended capacity.

Third, to provide a carton having these advantages which may be handled on existing types of machines for forming the carton in the flat or collapsed form and erecting the carton, and closing the bottom and filling.

Objects relating to details and economies of the invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A preferred embodiment of the invention is illustrated in the accompanying drawings. in which:

Fig. 1 is a perspective view of a carton embodying my invention with the carton erected to receive the contents.

Fig. 2'is a plan view of the blank with the liner superimposed thereon and partially adhered to the blank.

Fig. 3 is a fragmentary plan view of the collapsed carton, portions being broken away to show the relationship of the lower part of the liner to the container.

Fig. 4 is a perspective view of the liner partially opened, the fully open position of the liner being indicated by dotted lines.

Fig. 5 is an enlarged fragmentary view partially in vertical section showing the relation of the liner to the bottom and associated walls with the carton in erected position.

Fig. 6 is a horizontal section on line 8-6 of Fig. 5.

Fig. '1 is a horizontal section on a line corresponding to line 1-1 of Fig. 5.

In the accompanying drawings, i represents the carton and 2 the liner. The carton is formed of an integral blank consisting of side walls 3 and l, and end walls 5 'and t, these walls being arranged in alignment. The blank is scored at I to provide hinge connections between the walls. One end wall is provided with a sealing flap 8 which is adhesively secured to the other end of the blank. These walls are provided with bottom end closure 2 I flaps or extensions I. II. II and it, these flaps being adapted to be folded into overlapping relation as shown in Fig. 5 and adhesively secured together when the carton is erected. The upper ends of these walls are provided with closure flaps or extensions i3, ll, I i and ii.

The closure I4 is provided with a tongue adapted to engage the slit II in the closure II. With the sealing flap secured, the carton may be collapsed as shown in Fig. 3.

I have used the term side and end walls" as a matter of convenience in description as it will 'be appreciated that the carton may be square, for example.

The carton is formed of relatively still stock. commonly used grades of container or carton board being satisfactory. The end closure members are hingedly connected to the walls by scores I8. It will be understood that the carton l is of a well known type.

The liner 2 is formed of relatively flexible material, commonly transparent moisture-proof or water-proof stock, and desirably of heat scalable material. It is formed of a strip of suitable material folded upon itself and the edges brought into overlapping relation and heat sealed at ll. The lower end of the liner is collapsed and heat sealed at it. It will be understood that if it is not formed of heat sealable material that suitable adhesive can be used for forming these joints.

The tubular liner is preferably longitudinally scored at ii to facilitate its expansion into iltting engagement with the walls of the carton and is also longitudinally scored at 22 to racilitate closing the liner.

After the blank is prepared, the liner is superimposed on the blank, as shown in Fig. 2, and is adheslvely secured to the four walls of the blank. the walls having previously received the spot rows of adhesive 23, 24 and 25. After the liner is positioned, as shown in Fig. 2, the walls I and t are folded upon the liner and the sealing flap 8 secured to the wall 8. While I prefer to use the spot adhesive as that is sufflcient, it will be understood that rows of adhesive or more extensive adhesive areas may be employed.

these lines diverging upwardly from the score line or hinging line connecting the walls 4 and 5.

The spacing of the adhesive 24 substantially from the lower ends of the walls permits the folded bottom to lie between the walls of the collapsed carton and to swing down to erected position, as shown in Fig. 5, when the carton walls are squared or erected. The end closure members 9, l0, H and I2 may then be closed and sealed and they provide a support for the open bottom. The folding lines of the bottom are indicated in Fig. 5.

Thus arranged, the bottom is fully extended when the carton is erected so that it permits the complete fllling of the carton and avoids unfilled pockets which frequently result in cartons having the bag type of liners. The upper end of the liner projects from the carton so that it can be folded prior to the closing of the top closure members.

I have illustrated and described a very practical embodiment of my invention. I have not attempted to illustrate or describe other adap-.

tations or modifications of my invention as it is believed that this disclosure will enable those skilled in the art to embody or adapt my invention as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. A flat foldable carton of rectangular section when erected formed of an integral blank of relatively stiff stock comprising aligned hingedly connected side and end walls, the ends of the blank being connected, there being top and bottom closure extensions at the top and bottom ends of the walls foldably connected thereto, and a tubular liner of relatively flexible material longitudinally scored to provide side and end wall portions corresponding in width to the side and end wall portions of the carton, the end wall portions of the liner being longitudinally scored to form accordion pleats, the liner being sealed at its lower end, the seal extending across the accordion pleats in folded overlapping relation to each other in each liner end wall, the accordion pleats of each liner end wall above the seal thereof being disposed in an opened extended flattened condition against one of said end walls of the carton when the carton is disposed in a flattened condition, the liner when collapsed and with the end wall pleats thereof disposed in said opened extended flattened condition against the end walls of the carton being adhesively secured to the inner sides of the carton walls closely adjacent to the juncture of the top closure extensions to the walls b a row of spot adhesive, one pair of side and end walls of the liner when collapsed and with the end wall pleats thereof disposed in said opened extended flattened condition against the end walls of the carton being further adhesively secured to one pair of the carton side and end walls adjacent to but spaced from the juncture of the bottom closure extensions thereto, the bottom end portion of the liner being folded into a flattened condition against the body portion of the liner, the seal being disposed in an upwardly inclined position to facilitate folding said bottom end portion in a flattened condition against the body of the liner.

2. A flattened foldable carton of rectangular section when erected formed of an integral blank of relatively stiff stock comprising aligned 4 hlngedly connected pairs of side and end walls, the ends of the blank being connected, there being top and bottom closure extensions at the top and bottom ends of the walls foldably connected thereto, and a tubular liner of relatively flexible material longitudinally scored to provide side and end wall portions corresponding in width to the side and end wall portions of the carton, the end walls of the liner being longitudinally scored to form accordion pleats, the bottom of the liner including the pleats in overlapping relation to each other being sealed, the

pleats of each liner end wall above the seal at the lower end thereof being disposed in an opened flattened condition against the corresponding end wall of the carton when the carton is flat, the liner when collapsed and with the end wall pleats thereof disposed in said opened extended flattened condition against the end walls of the carton being adhesively secured to the inner sides of the carton walls closely adjacent to the Juncture of the top closure extensions to the walls by adhesive and being further adhesively secured to the side and end walls in substantially spaced relation to the juncture of the bottom closure extensions to the walls, one pair of side and end walls of the liner being further adhesively secured to one pair of the carton side and end walls adjacent to but spaced from the juncture of the bottom closure extensions thereto, the bottom end portion of the liner being folded into a flattened condition against the body portion of the liner, the seal being disposed in an upwardly inclined position to facilitate folding said bottom end portion in a flattened condition against the body of the liner.

3. A carton of rectangular section formed ofan integral blank of relatively stiff stock comprising aligned hingedly connected side and end walls, the ends of the blank being connected to provide a collapsible tubular structure, there being top and bottom closure extensions at the top and bottom ends of the walls foldably connected thereto, and a tubular liner of relatively flexible material longitudinally scored to provide side and end wall portions corresponding in width to the side and end wall portions of the carton, the end wall portions of the liner being longitudinally scored to form accordion pleats, the liner when collapsed corresponding substantially in width to the width of the collapsed carton, the liner being sealed at its lower end, the seal extending across and connecting the accordion pleats in superimposed relation to each other in each liner end wall, the accordion pleats of each liner end wall above the seal thereof being disposed in opened extended flattened condition against one of said end walls of the carton when the carton is flat, the liner when collapsed and with the end wall pleats thereof disposed in said opened extended flattened condition against the end walls of the carton being adhesively secured to the inner sides of the carton walls, the bottom of the liner being folded upon itself in a flattened condition, the seal being disposed in an upwardly inclined position against the body of the liner to facilitate folding the bottom of the liner into said flattened condition.

4. A carton of rectangular section formed of an integral blank of relatively stiff stock comprising aligned hingedly connected side and end walls, the ends of the blank being connected to provide a collapsible tubular structure, there being top and bottom closure extensions at the top and bottom ends of the walls foldably connected thereto, and a tubular liner of relatively flexible material longitudinally scored to provide side and end wall portions corresponding in width to the side and end wall portions of the carton, the end walls being further scored to form accordion pleats, the bottom of the liner being sealed with the pleats collapsed inwardly the liner when collapsed with the pleats opened corresponding substantially in width to the width of the collapsed carton, the liner when collapsed and with the end wall pleats thereof disposed in said opened extended flattened condition against the end walls of the carton being adhesively secured to the inner sides of the carton walls, the bottom of the liner being folded upon itself in a flattened condition, the seal being disposed in an upwardly inclined position against the body of the liner to facilitate folding the bottom of the liner into said flattened condition.

5. A carton of rectangular section formed of an integral blank of relatively stiff stock comprising aligned hlngedly connected side and end walls, the ends of the blank being connected to provide a collapsible tubular structure, there being top and bottom closure extensions at the top and bottom ends of the walls foldably connected thereto, and a tubular liner of relatively flexible material having end walls folded upon themselves at the lower ends thereof, the liner being sealed at its bottom end, the seal extending across the end wall folds in superimposed relation to each other, the liner end walls above the scaled folds at the lower ends thereof being disposed in a non-folded flattened relation against the end walls of the carton when the carton is in a flattened collapsed condition, portions of the liner corresponding to the surrounding walls being adhesively secured thereto so that the liner is extended when the walls are erected, portions of the liner walls corresponding to one pair of the side and end walls being attached thereto adjacent to but spaced from the bottom edges of such walls, the other wall portions of the liner corresponding to the outer walls being unattached thereto for a substantially greater distance from the lower edge thereof, the sealed bottom of the liner being when in flattened condition folded upwardly uponitself with the upper portion thereof overlapping portions of the side wall below the point of attachment of the side wall upon which it is folded to the carton walls.

KENNETH T. BUTTERY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,099,257 Bergstein Nov. 16, 1937 2,200,818 Bergstein May 14, 1940 2,250,249 Bergstein July 22, 1941 2,296,895 Bergstein Sept. 29, 1942 2,326,269 Waters Aug. 10, 1943 

